feat: Implement Phase 5 optimization and best practices

src/lib/logger.ts

@@ -0,0 +1,20 @@
+/**
+ * Logger Utility
+ * 
+ * Provides conditional logging based on environment.
+ * Prevents console noise in production builds.
+ */
+
+const isDev = import.meta.env.DEV;
+
+export const logger = {
+  log: (...args: any[]) => {
+    if (isDev) console.log(...args);
+  },
+  error: (...args: any[]) => {
+    console.error(...args); // Always log errors
+  },
+  warn: (...args: any[]) => {
+    if (isDev) console.warn(...args);
+  },
+};